US$ 23.05
https www.google.com search hl en&gl us&q l-carnitine&kgmid m 01nw7c L-Carnitine - Amino Acids Each 473 ml bottle delivers a potent dose of 1500 mg of L L-Carnitine 250 mg. - Windmill
Description
D-Carnitine: An inactive form that may interfere with the bodys ability to absorb active L-carnitine

Natural Medicines Database [requires subscription]

Conversion of acetylcarnitine to carnitine was higher than the average renal clearance of acetylcarnitine, suggesting that a large proportion of the acetyl moieties of the exogenously administered acetylcarnitine is either rapidly used in biosynthesis and stored (in a form other than acetylcarnitine), or hydrolyzed [106]

References 1.Rutkowski M, Grzegorczyk K
